<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>后台管理-登陆</title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta http-equiv="Access-Control-Allow-Origin" content="*">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="format-detection" content="telephone=no">
    <!--    从commons中引入公共css-->
    <div th:replace="commons/common::copy-css"></div>
    <!--[if lt IE 9]>
    <script src="https://cdn.staticfile.org/html5shiv/r29/html5.min.js"></script>
    <script src="https://cdn.staticfile.org/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
    <style>
        html, body {width: 100%;height: 100%;overflow: hidden}
        body {background: #1E9FFF;}
        body:after {content:'';background-repeat:no-repeat;background-size:cover;-webkit-filter:blur(3px);-moz-filter:blur(3px);-o-filter:blur(3px);-ms-filter:blur(3px);filter:blur(3px);position:absolute;top:0;left:0;right:0;bottom:0;z-index:-1;}
        .layui-container {width: 100%;height: 100%;overflow: hidden}
        .admin-login-background {width:360px;height:300px;position:absolute;left:50%;top:40%;margin-left:-180px;margin-top:-100px;}
        .logo-title {text-align:center;letter-spacing:2px;padding:14px 0;}
        .logo-title h1 {color:#1E9FFF;font-size:25px;font-weight:bold;}
        .login-form {background-color:#fff;border:1px solid #fff;border-radius:3px;padding:14px 20px;box-shadow:0 0 8px #eeeeee;}
        .login-form .layui-form-item {position:relative;}
        .login-form .layui-form-item label {position:absolute;left:1px;top:1px;width:38px;line-height:36px;text-align:center;color:#d2d2d2;}
        .login-form .layui-form-item input {padding-left:36px;}
        .captcha {width:60%;display:inline-block;}
        .captcha-img {display:inline-block;width:34%;float:right;}
        .captcha-img img {height:34px;border:1px solid #e6e6e6;height:36px;width:100%;}
    </style>
</head>
<body>
<div class="layui-container">
    <div class="admin-login-background">
        <div class="layui-form login-form">
<!--            这是表单提交的相关信息-->
            <form class="layui-form" th:action="@{/admin/login}" method="post">
                <div class="layui-form-item logo-title">
                    <h1>学习后台登录</h1>
                </div>

                <div class="layui-form-item">
                    <label class="layui-icon layui-icon-username" for="username"></label>
                    <input type="text" name="username" lay-verify="required|account" placeholder="用户名或者邮箱" autocomplete="off" class="layui-input" th:value="admin">
                </div>
                <div class="layui-form-item">
                    <label class="layui-icon layui-icon-password" for="password"></label>
                    <input type="password" name="password" lay-verify="required|password" placeholder="密码" autocomplete="off" class="layui-input" th:value="123">
                </div>

                <div class="layui-form-item">
                    <label class="layui-icon layui-icon-vercode" for="captcha"></label>
                    <input type="text" name="captcha" lay-verify="required|captcha" placeholder="图形验证码" autocomplete="off" class="layui-input verification captcha">
                    <canvas id = "canvas" width="100" height="30"></canvas>
<!--                    <div class="captcha-img">-->
<!--                        <img id="captchaPic" th:src="@{/images/captcha.jpg}">-->
<!--                    </div>-->
                </div>

                <div class="layui-form-item">
                    <input type="checkbox" name="rememberMe" value="true" lay-skin="primary" title="记住密码">
                </div>
                <div class="layui-form-item">
                    <button class="layui-btn layui-btn layui-btn-normal layui-btn-fluid" lay-submit="" lay-filter="login">登 入</button>
                </div>
            </form>
        </div>
    </div>
</div>
<!--    从commons中引入公共js-->
<!--<div th:replace="commons/common::copy-js"></div>-->
<script th:src="@{/lib/jquery-3.4.1/jquery-3.4.1.min.js}" charset="utf-8"></script>-->
<script th:src="@{/lib/layui-v2.5.5/layui.js}" charset="utf-8"></script>
<script th:src="@{/lib/jq-module/jquery.particleground.min.js}" charset="utf-8"></script>
<script th:src="@{/js/jquery.cookie.js}" charset="utf-8"></script>
<script th:src="@{/js/lay-config.js}" charset="utf-8}"></script>
<script>
    layui.use(['form'], function () {
        var form = layui.form,
            layer = layui.layer;

        // 登录过期的时候，跳出ifram框架
        if (top.location != self.location) top.location = self.location;

        // 粒子线条背景
        $(document).ready(function(){
            $('.layui-container').particleground({
                dotColor:'#7ec7fd',
                lineColor:'#7ec7fd'
            });
        });


        //使用cookies记住密码
        function setCookie() {
            var userName = $('#username').val();
            var passWord = $('#password').val();
            var aa = $("input[type='checkbox']").is(":checked");//获取是否选中
            if(aa==true){//如果选中-->记住密码登录
                $.cookie("userName",userName.trim(),{expires:7});//有效时间7天，也可以设置为永久，把时间去掉就好
                $.cookie("passWord",passWord.trim(),{expires:7});
            }else{//如果没选中-->不记住密码登录
                $.cookie("passWord", "");
                $.cookie("userName", "");
                alert("没有记住密码")
            }
        }

        function getCookie(){ //获取cookie
            var userName = $.cookie("userName"); //获取cookie中的用户名
            var pwd =  $.cookie("passWord"); //获取cookie中的登陆密码
            if(pwd){//密码存在的话把“记住用户名和密码”复选框勾选住
                $("[name='rememenber']").attr("checked","true");
            }
            if(userName!=""){//用户名存在的话把用户名填充到用户名文本框
                $("#userName").val(userName);
            }else{
                $("#userName").val("");
            }
            if(pwd!=""){//密码存在的话把密码填充到密码文本框
                $("#passWord").val(pwd);
            }else{
                $("#passWord").val("");
            }
        }


        // 进行登录操作
        form.on('submit(login)', function (data) {
            data = data.field;

            var userName = $('#userName').val();
            var passWord = $('#passWord').val();
            var aa = $("input[type='checkbox']").is(":checked");//获取选中状态
            if(userName == ''){
                alert("请输入用户名。");
                return;
            }
            if(passWord == ''){
                alert("请输入密码。");
                return;
            }
            if(aa==true){
                setCookie();   //调用设置Cookie的方法
                window.location = "<%=request.getContextPath()%>/supplier-list";
            }else if(aa==false){
                setCookie();  //调用设置Cookie的方法
                window.location = "http://www.baidu.com";
            }

            if (data.username == '') {
                layer.msg('用户名不能为空');
                return false;
            }
            if (data.password == '') {
                layer.msg('密码不能为空');
                return false;
            }
            if (data.captcha == '') {
                layer.msg('验证码不能为空');
                return false;
            }if (val == ''){
                layer.msg('请输入验证码');
            }else if (val == num){
                layer.msg('提交成功');
                $(".layui-input verification captcha").val('');
                draw(show_num);
            }else{
                layer.msg('验证码错误，请重新输入');
                $(".layui-input verification captcha").val('');
                draw(show_num);
            }
            return true;
        });
    });


    $(function () {
        var show_num = [];
        draw(show_num);
        $("#canvas").on('click',function () {
            draw(show_num);
        })
    })

    //调用两个函数

    function draw(show_num) {
        var canvas_width=$('#canvas').width();
        var canvas_height=$('#canvas').height();
        var canvas = document.getElementById("canvas");//获取到canvas的对象，演员
        var context = canvas.getContext("2d");//获取到canvas画图的环境，演员表演的舞台
        canvas.width = canvas_width;
        canvas.height = canvas_height;
        var sCode = "A,B,C,E,F,G,H,J,K,L,M,N,P,Q,R,S,T,W,X,Y,Z,1,2,3,4,5,6,7,8,9,0";
        var aCode = sCode.split(",");
        var aLength = aCode.length;//获取到数组的长度

        for (var i = 0; i <= 3; i++) {
            var j = Math.floor(Math.random() * aLength);//获取到随机的索引值
            var deg = Math.random() * 30 * Math.PI / 180;//产生0~30之间的随机弧度
            var txt = aCode[j];//得到随机的一个内容
            show_num[i] = txt.toLowerCase();
            var x = 10 + i * 20;//文字在canvas上的x坐标
            var y = 20 + Math.random() * 8;//文字在canvas上的y坐标
            context.font = "bold 23px 微软雅黑";

            context.translate(x, y);
            context.rotate(deg);

            context.fillStyle = randomColor();
            context.fillText(txt, 0, 0);

            context.rotate(-deg);
            context.translate(-x, -y);
        }
        for (var i = 0; i <= 5; i++) { //验证码上显示线条
            context.strokeStyle = randomColor();
            context.beginPath();
            context.moveTo(Math.random() * canvas_width, Math.random() * canvas_height);
            context.lineTo(Math.random() * canvas_width, Math.random() * canvas_height);
            context.stroke();
        }
        for (var i = 0; i <= 30; i++) { //验证码上显示小点
            context.strokeStyle = randomColor();
            context.beginPath();
            var x = Math.random() * canvas_width;
            var y = Math.random() * canvas_height;
            context.moveTo(x, y);
            context.lineTo(x + 1, y + 1);
            context.stroke();
        }
    }

    function randomColor() {//得到随机的颜色值
        var r = Math.floor(Math.random() * 256);
        var g = Math.floor(Math.random() * 256);
        var b = Math.floor(Math.random() * 256);
        return "rgb(" + r + "," + g + "," + b + ")";
    }



</script>
</body>
</html>